linux-kernel - Re: [v3.7-rcx] drm/i915: *ERROR* Timed out waiting for forcewake old ack to clear

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Date:	Sat, 1 Dec 2012 14:40:58 +0100
From:	Jörg Otte <jrg.otte@...il.com>
To:	Chris Wilson <chris@...is-wilson.co.uk>
Cc:	Daniel Vetter <daniel.vetter@...ll.ch>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [v3.7-rcx] drm/i915: *ERROR* Timed out waiting for forcewake old
 ack to clear

Thanks, the path works.

Jörg


2012/11/27 Chris Wilson <chris@...is-wilson.co.uk>:
> On Tue, 27 Nov 2012 17:29:36 +0100, Jörg Otte <jrg.otte@...il.com> wrote:
>> At boot-up with newer kernels (at least v3.6.x, v3.7-rc) I always see
>> following on the bootup-display:
>>
>> 3.7-rcx: [drm:__gen6_gt_force_wake_mt_get] *ERROR* Timed out waiting
>> for forcewake old ack to clear.
>> 3.6.x:    [drm:__gen6_gt_force_wake_mt_get] *ERROR* Force wake wait timed out
>
> This is harmless error, just reporting a one-time conflict with the
> state leftover by the BIOS. The fix is queued for 3.8.
>
> commit 16995a9fe140802c026c2ce17bf7e232f86d57ab
> Author: Chris Wilson <chris@...is-wilson.co.uk>
> Date:   Thu Oct 18 11:46:10 2012 +0100
>
>     drm/i915: Clear FORCEWAKE when taking over from BIOS
> -Chris
>
> --
> Chris Wilson, Intel Open Source Technology Centre
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